hebden



` R. 16,666 F, HEBBEN AUTOMATI C WEI GHER July s, 1927.A

original Fileduay '7, 1917 6 Sheets-Sheet I1 y@ @Il July 5 1927 F.HEBBEN AUTO-NTIC WEIGHER Original Filed lay 7, 1917 6 Sheets-Sheet 3lNVENTOR F. HEBDEN AUTOMATIC WEIGHER July 5, 1927. Re. 16,666

#Original Filed May '7, 1917 6 Sheets-Sheet 4 ZIV INVENTOR yff July 5,1927- F, HEBBEN AUTOMATIC WEIGHER 6 sheets-sheet s Original Filed May'7, 1917 16,666 July 5, 1927. v F- HEBBEN Re AUTOMATIC WEIGHER OriginalFiled May '7, 1917 6 Sheets-$l1eet 6 l N VENTOR Reissued July 5, 1927.

UNITED STATES PATENT OFFICE.

FRANK HEBBEN, 0F PASSAIC, YNEW JERSEY, AASSIGNOB, TOv MERRICK SCALE KFG.COMPANY, OF PASSAIC, NEW JERSEY, A CORPORATION F NEW JERSEY.

AUTOMATIC WEIGHEB.

Original No. 1,490,270, dated April 15; 1824, Serial No. 166,804, ledlay 7, 1917. Application tor reissue led April 3, 1926. Serial No.99,655.

1 This invention has reference more particularly to measuring devices.in which means is provided for automatically determining themeasurement, and also having mechanism (zo-operating therewith toindicate and record the correct measurement. The object of the inventionis to provide mechanism which may readily be applied to the ordinary orstandard forms of measuring devices for the determining the measurement.

Another object is the provisionotmeans which Will have the effect ofapplying variable force or weight to a measuring part, such as the scalebeam of a weighing mechanism, for the purpose of balancing the scalebeam with or Without a load, such means being constructed and arrangedto effect a variable application of a Weight counterbalancing force upon.the scale beam with the friction thereof1 minimized to such a degreethat it will not affect the accuracy of the scale or weighing mechanismwhatso.

balancing means is adjusted thereby until aperfect and correct balanceand, therefore, a

correct measurement or Weighing is obtained.

A further object relates to the construction of power driven loadcounterbalancing mechanism with controlling means therefor which is soeasily operated that it does not effect the accuracy of the measuringdevice.

A further object is the provision of indicating and recording means andcontrolling 4.0:V means therefor constructed andarranged to prevent thetaking of a reading of the measurement unless the load is accuratelybalanced.

This invention also has other objects and features of improvement whichare clearly set forth in the following specification and shown in theaccompanying drawings, and which are claims.

In the drawings accompanying and forming a part of this specificationthere is shown an embodiment of the invention wherein Figure l is afront elevation of the scale purpose of automatically particularlypointed outv in the' beam and supporting parts therefor of the usualweighing mechanism and showing parts of the present invention .inconnection therewith.

Figure 2 is a top or planview of the automatic counterbalance adjustingand recording mechanism.

Figure 3 is an end elevationlof the mecha- -nism shown in Figure 2looking from the bottom thereof.

Figure 4 is an elevational View of the mechanism shown in Figure 2looking at the left hand end thereof.

Figure 5 isa sectional View taken on the line 5-5 of Figure 3, portionsthereof being omitted to more clearly show certain parts.

Figure 6 is an elevational view of the means for controlling theadjusting means for the counterbalancing means and power driven meanstherefor, the same being shown in the normal neutral position.

- Figure 7 is a View of the parts shown in Figure 6 showing the parts inone of its adjusted positions.

Figure 8 is an enlarged sectional view of the controlling mechanism forthe adjusting means of counterbalaneing means showing the manner ofmounting the controller wheel of said mechanism. f

Figure 9 is an enlarged perspective view of a rack and pinion mechanismfor operating the counterbalancing means and' the means for holdingr`said rack and pinion mechanism in operative relation.

Figure 10 is a diagrammatic View of the electrically operatedcontrolling means which prevents the recording of the weight 90 of aload except when the load is not perfectly balanced and showing theelectrical hook up thereof with a source of electricity.

Figure 11 is a detail view of a circuit closing means interposed in theelectrical hok up of the means shown in Figure 10; an

Figure l2 is a sectional vewto show the mounting of a lever forming apart of the electrical control means shown in Figure 10.

A scale beam l, such as is usually employed in weighing scales issupported by such as a. platform or other means whereon the load to beweighed is supported during the weighin operation. Mounted, on theweighin sca e frame or otherwise supported a short tance below the scalebeam 1 is-a frame or latform 5 wherein is mounted and su porte themechanism constituting -the su jects-matter of the present application.This platform is cutaway or provided with an opening 6 through which therod 4 passes, and ashort distance therefrom and directly below the scalebeam 1 is a bracket 7 mounted upon the platform 5 and provided with. apair of spaced aligning bearings 8 within which are supporte knifeedgepivots 9 of a supplemental beam 10. This beam 10 is arrangedparallel with the scale beam 1 and extends somewhat beyond the endthereof, and is formed at its outer or free end with a bifurcationoryoke 11, each arm of said yoke having a knife ed e pivot support 12.rlfhe end of the scale eam 1 is provided. with knife ed e pivot supports13 from which are ordinari?)r suspended load counterbalancing weights. Acorrespondingpair of kn1fe edge pivots 14 extend oppositel from thesupplementalvbeam 10, dlrectly eneath the pivot supports 13 on the scalebeam, and these pivot su ports 13, 14 are connected by means of a link15 which is provided at each end with a pair of suitable bearings orloops to loosely receive the said pvot supports 13 and 14, and therebyconnecting the beam 10 with the scale beam 1 to participate in themovement thereof. I Suspended from the knife edg bearings 12 ofthe yoke11 is a U shape frame 16 which carnes a pot or tube 17 to extend in avertical direction so that the upper end thereof is arranged directlybelow the opening' between the legs of the yoke 11. This pot or tube isfilled to the required depth with mercury and co-operates `with parts tobe described hereafter for counterbalancing the weight of a load appliedto the scale beam 1 through the rod 4.

At the end of the supplemental beam 10 opposite to the yoke 11 is athreaded stem or extension 18 upon which is adjustably mounted a weight19 whereby the parts of the weighing mechanism connected with the scalebeam may be brought to a perfect balance.

For the purpose of providin a variable force or weight on the scale eam1 for counterbalancing a load applied thereto, there is provided a/glassrod or plunger 20, thelower end of which dips into the mercury 21 in themercury pot 17 and the upper end of which` is secured to and supportedby a cross bar 22. This cross bar 22 has secured at each end a dependingvertical rod 23 which passes through an opening at the up er end ofguide bars 24 and an opening at ower end of said guide bars adjacent thethe scale beam. Conversely, the withdrawal of the glass plunger 20fromthe mercury acts in a manner to subtract weight from le mercury potand thereby from the scale am. lor the urpose ofproviding means whlch issu clently powerfulto adjust the glass plunUer 20 for counterbalancingthe load and a so which is capable of sensitive control by means of themovement of the scale beam, the following construction is provided whichforms a very essential part of my invention.

Adjacent and immediately beyond the yoke end of the supplemental bar 10and mounted on the platform is a bracket 26 provided at its upperportion with a pair of aligning bearings 27 and 28, in which a shaft 29is journaled to extend in a plane parallel to the guide rod carrying bar22 and inclined in an angular relation to the platform 5 as shown inFigure 3.

A traveling friction surface is driven from the shaft 29, which is inthe form of a concave disk 30, mounted and fixed on the lower end of theshaft 29, with the hub 31 abutting against the bearing 27 preventinglongitudinal movement of the shaft .in one direction, and a collar 32fixed on the shaft at the opposite side of said bearing preventslongitudinal movement of the shaft in the opposite direction.

Mounted onv the platform 5 to extend at a right angle to the shaft 29 isa shaft 33 which is journaled in bearings 34 and 35 `mounted on theplatform 5. The shaft 29 is driven by a belt 37 passing around a sheave36 fixed to said shaft and a sheave 38 fixed to the shaft 4 of the motor39 or any other with a pair of aligned bearing lugs 44 in which isrotatably supported a shaft 45 hav- Acave disk 30.

ing a frame 446 fixed at the end thereof immediately in-front of thedisk which frame, by reason of its support'upon the Vshaft 45, isadapted to be swung with the shaft about the axis thereof. The relationof the shaft with the disk 30 is such that the axis of the shaft 45passes through the center from which all points of the convex surface-of the disk 30 are equi-distant.l 'The frame 46 is elongated in a.direction at a lright angle to the shaft 45 and provided with twoaligned bearings 47 in which is rotatably mounted a shaft-18. This shaftat its end adjacent the disk has a bifurcated member 49 fixed thereto inthe legs of which member to engage between the same is rotatably mounteda disk or Wheel 50, the periphery of which is beveled as shown toprovide a narrow peripheral or `bearing edge which engages the innersurface of the con-v cave disk 30. It is necessary for the sensitiveoperation of the weighing mechanism that the shaft 48 shall turn freelywithin the bearings 47 and for this purpose said bearings are providedwith ball-bearingsl as shown in Figure 8 to engage the shaft. At the endof the shaft 48 opposite to the Wheel A50 the frame 46 is arranged witha lug 52 having an opening therethrough in alignment with shaft 48. Anend thrust pin 53 having a. tapered end 54 to engage a reces-s 55 in theend of the shaft 48 is engaged in the opening of lug 52 to extendthrough said opening with a spring 56 coiled about said pin and confinedbetween nthe lug 52 and an annular shoulder 57 on the pin whereby saidpin is urged at a uniform tension into engagement with the end of theshaft 48, Said tension being suiiicient to act through the shaft 48 andsupport 49'to urge the Wheel 50 into light frictional Contact with thecon- By the pivotal mounting of the frame 46 and shaft 45 the wheel 50may be swung to and from the axis of the revolving disk 30, therelation'of the pivotal supports 44 to the disk 30 being such that thewheel 50 will swing in an arc concentric with the surface of the disk 30and is at all times held in frictional engagement with the disk 30 bymeans of the end thrust pin 53.

As is apparent from the foregoing, the disk 30 is continuously .drivenby the motor 39 and the wheel 50 through its constant frictionalengagement with the inner surface of the disk 30 is likewisecontinuously driven. As long as the wheel 50 is in a position to travelin a plane exactly at'a right angle to a plane passing through the axesof the shafts 29 and 48 the wheel 50 will remain constantly at the samedistance from the axis of the revolving disk 30, and will travel in acircular path on the inner surface of the disk. However, should thesupport 48, 49 of the wheel A50 be shifted in its pivotal supportingbearings 47 so that it does not travel in a direction absolutely at aright angle with a pla-ne passing through the axes of the shafts 29 and48, that is the direction of travel changed in angplar relation to disk30, the revolution of the disk 30 will cause the wheel 50 to travel in aspiral path on the inner face of the disk which will direct said wheel50 toward or from the axis of the disk depending on the direction inwhich the wheel is tilted and this movement of the wheel will swing theframe 46 and shaft 45 in its pivotal support in the bearings 44.

The frame 49 and Wheel 50 are mounted in ball bearings and the wheel 50being of less diameter than the diameter of the concave surface of thedisk 30 has a bearing on the said disk at a point which is on the axialline of the shaft 48 which enables the frame 49 and wheel thereon to bevery easily tilted from the normal position shown in Figure 6 to that,for instance, shown in Figure 7, and such tilting of this structure fromthe normal position, which, as previously explained, causes the wheel 50to approach nearer to or depart farther from the axis of the revolvingdisk 30, is utilized to operate the mechanism for adjusting the plungerrod 20 to a greater or lesser degree `into and out of the mercury in pot17 and thereby exerting a force upon the scale beam to counterbalancethe load.

To control the tilting of the wheel carrying frame 4,9, a bar 58 isclamped or otherwise secured to the end of the scale. beam l to movetherewith and this bar has a rod 59 suspended therefrom, said rod havinga hook at its lower end to co-operate with another rod G0 connected atone end to the tiltable frame 49 with the opposite end suitably bent andarranged with a hooked terminal which rests or is supported in the hookof rod 59, the relation of the said rods being such that when the scalebeam is balanced the rod 60 through its connection with the rod 59 willhold the frame 49 in the normal position shown in full lines in Figure5, and in such position, as hereinbefore set forth the wheel 50 occupiesa position to travel in a direction at a right angle to a plane passingthrough the axes of the shafts 29 and 48, and, therefore, as the disk 30revolves the wheel 50 travels in a circular path on the inner surface ofthe disk 3() and remains at all times at the same distance from the axisof said disk. This holds the supporting frame in a stationary orinoperative position as shown in Figure 6.

However, should the scale beam 1 be moved to either side of its balancedposition, the rod 59 through its connection with the rod 60 will tiltthe frame 49 and wheel 50 thereby changing the direction of travel ofthe wheel 50 relative to the plane extend- 48, as shown in dotted linesin Figure 5, and the revolution of the disk 3() will cause the wheel 50to travel in a spiral path on disk 30 toward the center thereof oroutwardly from .the diskvaxis depending on the movement of the scalebeam above or below its position of balance, as the case may be.

As is obvious, whenV the scale beam 1 1S moved by a load appliedtheretoabove its balanced position, it is necessary for the plunger rod 2() tobe submerged to a'greater depth in the mercury pot 17 to exert anadditional pressure or increased force on the scale beam to balance theload, and conversely, if the scale beam is moved below its balancedposition, it is necessary that the plunger rod 20 be withdrawn somewhatfrom the mercury. For impartingLthis adjustment to the plunger 20 thereis provided a shaft 61 which is journaled in bearings 62 on the guidebars 244 to extend parallel to and slightly above the platform 5, saidshaft having pinions 63 thereon at the inner Side of and adjacent eachof the bearings. Racks 64 are secured at one end to the cross bar 22 todepend therefrom in position to be engaged by the pinions 63, and extendfor substantially the length of the guide rods 23 so that said pinions63, by

-I their engagement with the racks, are capable of raising and loweringthe cross bar 22 and the plunger rod connected thereto.A The racks 64are held in meshing relation with the pinion 63 by -idler rollers 65bearing against the rear faces thereof rotatably mounted on brackets 66secured to the guide bars 24. (Figure 9.)

The shaft 61 is rotated to adjust the plunger rod 2O from a shaft 67journaled in bearings 68 and 69 to extend in parallel relat-ion to theshaft 61, a spur gear 70 fixed thereon meshing with a spur gear 71 onthe shaft 61, the ratio of said spur gears being such that the shaft 61is operated at a predetermined lower speed relative to the shaft 67. Afriction disk 72, similar to the disk 50, previously described, havingthe edge beveled to provide a narrow bearing periphery is slidablymounted ou said shaft 67, and adapted to have adjustment longitudinallythereof, but is keyed to the shaft to rotate therewith by parallel rods73 which are secured at one end in the hub 74 of disk 72 to extendparallel with the shaft and at opposite sides of a small roller 7501i astud which is secured to and extends radially from shaft 67. The outerends of the rods 7 3 are held together by engaging in perforations indisk 76 or otherwise as desired. By this arrangement the disk 72 willrotate vwith the shaft and at the same time permits 78 therein (Fi re7). Depending from the frame 46 is a ever arm 79 which has intermediateof its length an offset extension 80 (Figure 5) upon which is mounted a.roller 81 which fitsv Within the annular groove 78, so that the swingingof the lever 79 with the movement of the frame 46 causes the disk 72 toslide longitudinally on the shaft 67, the normal position of the wheel 72 being as shown in Figure G with the wheel 5U traveling in a circularpath about the inner face of the disk 30.

When the wheel 5() travels in a spiral path on disk 30 toward the centerthereof the lever 79 draws the wheel 72 to the right of the normalposition, as shown in Figure 7, and when the wheel is tilted to cause itto travel in an opposite direction on the disk 30 the lever moves thewheel 7 2 to the opposite side of its normal position.

Mounted in bearings -82 and 83 of a 'bracket 84 which is4 secured to theplatform 5, andy to extend at right angles to the shaft 67 is a shaft 85whose axis intersectsl the axis of the shaft 67 and is arranged in thesame plane with the bearing edge of the wheel when in `its normal orneutral position. This shaft has a sheave 86 fixed thereon which isdriven by belt 87 from a sheave 88 on the shaft 33. As disk 89 is fixedon the end of shaft 85 in position to have Contact with the wheel 72,and said disk is held against the bearing edge of wheel 72 at a uniformpressure by a spring 90 confined between the bearing 82 and the sheave86.

The disk 89 is continuously driven when the Weighing mechanism is inoperation and the wheel 72 normally bears against the center of the diskas shown in Figures 2, 3, 6 and 8 in which position the wheel isstationary as no movement can, in such position, be imparted to it bythe revolving movement ofthe disk 89. Should the wheel 72 be moved toone side or the other of the axis of the disk 89 by the lever 7 9 itwill be caused to rotate byithe revolving disk 89, and through its shaft67 andthe gears 70 and 71 will rotate shaft 61 to operate and move theplunger rod 20 into or out of the mercury in pot 17.l The adjustment ofthe Wheel 72 from the normal inoperative position shown in Figure 6 ineither direction therefrom is controlled by the Swingin frame 46 which.in turn is controlled by the tilting, of the frame 49 and Wheel 50,which in turn are controlled by the movement of the scale beam throughthe connection. thereof by the rods 59 and 60 and the bar 58, therelation between the parts being such that when the scale beam is raisedabove the balanced position, the wheel 5() will be Jshifted relative tothe disk 30 to tilt the frame 46 to position wheel 72 relative to disk89 to aetuate shaft 61 to move the plunger rod 20 to a greater extentinto the mecc mercury 21 in ot 17, and conversely, when the scale beam1s moved below the balanced position, the Whee1 50 is shifted in the oposite direction so as to operate the sha 61 and mechanismconnectedthereto to raise the plunger rod from the mercury. In either case theplunger rod is moved in the required direction to balance the load andreturn the scale beam to the balanced position, and as the scale beamreturns to the balanced position the tilted position of the frame 49 iscorrespondingly varied by means of its connection with the scale beamthrough the rods 59 and 60 Vto return the wheel 50 to its normalposition as shown in Figure 6, with the lever 79 holding the wheel 72 inthe inoperative position all the parts co-operatin in such a way that asthe scale beam gra ually appreaches its balanced position, the operationof the parts and the movement of the plunger rod 20 is graduallyretarded and ceases as soon as a perfect balance is obtained.

The degree to which the plunger rod 20 is engaged in the mercury in thepot 17 determines the weight of the load on the scales, and asthis isadjusted by the movement of the shaft 61 and the pinion 63 thereonthrough their connection with the racks 64 the weight of the load can bedetermined by the amount of movement of the shaft 61 from the normalposition. 'For the purpose or recording the weight of the load there isprovided a recording mechanism in the form of a counter 91 which isoperated from the shaft 61 proportional to the movement of the plungerto advance the digit wheels of the counter and indicate the correctweight of the load on the scale. A detailed con'- struction of thiscounter is not shown as it, in itself, forms no part of the presentinvention and any suitable or commonly known counter may be used whichwill accomplish this result. The recording mechanism Lis preferably of atype whereby the weight as determined can be printed on a card orotherwise, and for this purpose I provide the spools 92 which areadapted to carry an ordinary typewriter ribbon 93 over the face of thecounter. A hammer 94 is pivot a printed record of the determined weightof a load weighed may be secured.

Means are provided to automatically actuatc the hammer to, make animpression from the recording mechanism of the weight of a load, and tocontrol such means so that the hammer will operate only when the scalebeam is in the balanced position. For

this. purpose I provide a pivotedv trip lever 97 adjacent the lower endof the hammer lever 94 normally urged by a spring 98 into engagementwith a notch 99 (Figure 10) in the lower end of the hammer lever 94,theref by holding said lever in the raised position preparatory tostriking against the recording mechanism to make an impression therefromof the weight of a load weighed. The hammer lever 94 is provided with anarm 100 to which is connected one end of a spring 101 the other endbeing connected to the hooked. end of an arrn 102 extending below theframe 5, so that when trip lever 97 is released from the notch 99 of thehammer lever 94, said hammer vlever is moved by said spring 101 tostrike the hammer against the recording mechanism with a blow ofsufficient force to make an impression there- 1frou and thereby vrecordthe weight of the The actuating of the trip lever 97 is controlled byelectrically operated means, said means comprising a magnet 103 which ispositioned below and to which the trip lever 97 serves as armature, andthrough the attractive force of which magnet the trip lever 97 isreleased from the hammer lever 94. The magnet is connected in a circuit105 with a source of electricity, such as a battery 104. Mounted uponthe frame 5 adjacent the lower end of the lever 79 is an insulatedsupport 106, atl each side of which, and insulated therefrom, arearranged spring contact membersv 107 each of which is connected in thecircuit 105 so that when they are both placed against the centralcontact member 106 the circuit is closed and the magnet energized andthereby the magnet withdraws the trip lever 97 from its engagement inthe notch 99 of the hammer lever 94 and permits the operation of lthehammer lever by the spring 101.

A pair of parallel vertical shafts 108 and 109 are rotatably supportedin an extended part of the bracket 84 said shafts having a pair ofmeshing-spur gears 110 and 111 thereon. On the extended hubs 112 of thegears (Figure 12).are loosely mounted a pair of'parallelly extendinglevers 113, the free ends of which embrace the upper free ends of thecontact springs 107, as shown l nection with the hubs of the levers 113tend I to swing the 'outerl ends of the ysaid levers v toward each otherand move the spring contacts 107 into contact with the common contactmember 106 and close the circuit. To

prevent such action and consequent closing of the circuit, except jvhenthe scale beam is in perfect balance, the lower end of the lever 79 ispositioned to swing between the extreme outer ends of the levers 113 andconstructed so that the levers cannot approach and close the circuitexcept when the lever 79 is at rest, exactly in the center or normalposition. As hereinbefore set forth movement ofA the scale beam out ofequilibrium, tilts the frame and wheel 5() and causes a swinging of theframe 46 and shaft 45 and consequently a swinging movement of the lever79, and it is imposslble for the frame to come to rest until the scalebeam is in equilibrium and ceases to move the rods 59 and 60. `Therotation of the gears 115 and 116 is timed so that the levers 113 swingmore slowly than thelever 79 and consequently the swinging of the lever79 keeps pushing the levers 113 away from the contact members 107 anddoes not permit both of the levers to engage said contact memberssimultaneously which is necessary in order to close the circuit untilthe lever 79 has ceased to oscillate and comes to rest midway betweenthe ends of the levers 113.

As soon as the lever 7 9 comes to rest the contact is automaticallymade, the trip lever 97 released by the closing of the circuit andenergizing of the magnet 103 and impression makmg movement is impartedto lever 94 to make a record of the Weight of the load. After the loadis removed the hammer lever 94 is manually raised and the mechanism isthen in position to Weigh and record a successive load.

While I have shown the controlling means herein'in connection with aWeighing scale, I contemplate using it in connection with any measuringdevice or for any purpose wherein asensitive control of' operating partsis required.

Having thus described my invention, I claim:

l. In a measuring mechanism, the combination of adjustable means fordetermining the measurement, driven means for operating said adjustablemeans, a drive disc having a friction drive surface, a member pivotedadjacent the said friction surface, for controlling the said drivenmeans, an idler wheel on the said pivote'd member having a frictionalengagement with the said rotary disc and controlling means for changingthev position of the said idler so as to cause it to travel spirally onthe'face of the disc and thereby oscillate the pivoted member forcontrolling the said driven means.

2 The combination with mcasuringmechanism of adjusting means fordetermining the measurement, friction drivemeans for. operating thesaidadjusting means, a driven concave disc, an oscillating member forcontrolling the said friction drive means, an idler on the saidoscillating member having a frictional engagement with the concavesurface' of the said driven disc and means controlled by the measuringmechanism for varying the position of the idler, whereby it is operatedby the rotary disc to oscillate the said member.

3. In combination, a scale beam, fluid controlled mechanism forcounterbalancing the scale beam, and connected therewith, means forautomatically adjustingsaid fluid control mechanism controlled by themovement ofthe scale beam, Weight recording mechanism and meansco-acting with said fiuid control actuating means for operating saidrecording mechanism.

4. In a. scale, in combination, a scale beam, fluid control meansco-operating with said scale beam, to counterbalance the latter, meansunder control of the scale beam for automatic adjustment of said fluidcontrol means, to produce variable resistance against movement of thescale beam, including power means and connections operating said fluidcontrol mechanism, and recording means co-acting with said actuatingmeans for-the fiuid control mechanism. l

5. In a scale, in combination, a scale beam, a fluid container,connected with the scale beam and a displacement member adjustableWithin the Huid in said container for counterbalancing the Weight of theload, power driven means, recording mechanism, means connecting saidrecording mechanism with the power-operated member, and means actuatedby the movement of the Vscale beam to cause the counterbalancingmechanism to function and the recording mechanism to be operated.

6. In a scale, in combination, a scale beam, a receptacle adapted tocontain a fluid, a displacement member connected With the scale beam anddepending Within the receptacle, ay recording mechanism, a. drivenmember, connections from the driven member connected respectively withsaid receptacle and the recording mechanism for operating the same. butnormally inactive, and means actuated by the movement of the scale beamfor causing said connecting mechanisms respectively to the displacementmember and recording mechanism to be operated from the driven member.

7. In Weighing mechanism, ,a scale beam, and means operative when thebeam is moved out (of equilibrium to exert a force thereon to return thebeam to position of balance including ltraveling' contacting frictionsul.'-

faccs the direction of travel of one of which surfaces is adapted to bechanged in angular relation to the direction of vtravel of the othersurface.

8l In weighing mechanism,y a load support, and means operative When theweighing mechanism is moved out of equilibrium by a load applied to orremoved from the load support to return the weighing nie'clianism toposition of equilibrium including traveling contacting friction surfacesthe direction of travel of one of which surfaces is adapted to bechanged in angular relation to the direction of travel of the othersurface when the weighing n'iechaiiisni is moved out of equilibrium. Y

9. In Weighing mechanism as claimed in claim 8, wherein the load supportembodies a scale beam and the traveling friction surfaces comprise apair of contacting rotatable .friction surfaces one of Which isrotatable in"\ a fixed plane and the other of which surfaces isadjustable through the deflection of the scale beam to changethe'direction of travel thereof in angular relation to the direction oftravel of the other surface.

10. In weighing mechanism, ascale beam arranged lwith load supportingmeans, adjustable means operative to exert a variable force upon thescale beam to counterbalance `a' load supported thereby, power operatedmeans to actuate said force adjusting means,

-and means operative through' the deflecting movements of the beam tocontrol said power operated means including a pair of travelingcontacting friction surfaces the direction of travel of one of whichsurfaces is adapted -to be changed through the deflection of the scalebeam in angular relation to the direction of travel of the otherSurface.

11. In Weighing mechanism, load supporting means, adjustable means toexert a .variable force upon the load supporting means to counterbalancea load supported thereby, and continuously operating means to co-operatewith said variable force adjusting means `to retain the load supportingmeans in equilibrium with no load applied thereto and automaticallyoperative to adjust said force applying means when the weighingmechanism is moved out of equilibrium to underload or overload positionand bring the weighing mechanism into equilibrium.

12. In Weighing mechanism, a beam arranged with load supporting means,adjustable means to apply a force to the beam to counterbalance the`foice of the load sup-V ported by the beam and relieve the beam of saidforce and the return thereof to balance when the load is removed, meansto adjust said force applying means, power means, and means controlledby the beam to operatively connect the count-erbalancing force applyingmeans to and disconnect the same from the power means, comprising atraveling friction surface and a disk to friction-ally contact with anddriven b said friction surface and the direction o travel thereofadapted to be changed in angular relation t the direction of travel ofthe friction surface by the defiection of the beam to overload orunderloa'd position.

13. In weighing mechanism as claimed in claim 12, the provision of meansto record the weight of successive weighings operative from the means toadjust the counterbalancing means.

14. IVeighing mechanism as claimed in claim 12. wherein the connectionvbetween the adjusting means for the counterbalancing Ameans with thepower means comprises a friction disk and a friction wheel to haveperipheral contactwith and adjustment axially and transversely of theface of the friction disk.

15. Weighing mechanism as claimed in claim 12, wherein the connectionbetween the adjusting means for the eounterbalancing means-with thepower `means comprises a friction disk and a friction wheel to haveperipheral contact with an axial adjustment transversely of the face ofthe friction disk, and the rst disk which frictionally contacts with thetraveling friction suifaceand the direction of travel of which isadapted to be changed in angular relation to the travel of saidfrictionsurface by the defiection of the beam having a connection withtion of travel of said first disk effects adjustment of said frictionWheel.

1t. In weighing mechanism as claimed in claim 1 2, the pi'ovision'ofmeans to record the weightof successive weighings operative from theadjusting means for the .counterbalancingmeans, and means to make animpression from the recording means.

17. In weighing mechanism as claimed in claim 12, the provision ofmeansto record the weight of successive` weighings operative from theadjust-ing means for the couliterbalancing means, a pivotally .supportedhammer for striking'against and making an impression from said recordingmeans and yieldingly urged toward the recording means, a latch fornormally .holding said hammer in inactive position.v and anelectromagnet for releasing the latch from the hammer connected in anelectric circuit rendered inactive from the weighing mechanism when itis moved out of equilibrium by a load applied' thereto and renderedactive when the Weighing mechanism isbrought into perfect balance.

18. In weighing mechanism as claimed in claim12, tl.ie` provision ofmeans to record 1 into an normally urged to circuit.- closing position,f

and'said circuit closing 'means moved to circuit opening position by themeans for connecting the first disk with the friction wheel to eectadjustment of the latter.

19. In Weighing mechanism, a. beam arranged with load supporting means,and means to apply a force to the beam to oppose and equalize the forceof the loadrsupported by the beam and relieve the beam of said force andreturn the same to. balance when the load is removed,`comprising aliquid cari-yin receptacle, and a plunger movable out of the liquid inthe receptacle to variably displace the liquid in the receptacle, andone of which is connected to and adapted to participate in the movementof the beam and the other to have movement inde-- pendent of the beam.

20. In weighing mechanism as claimedin claim 19, wherein the receptaclehas connection with the beam to participate in the movement thereof andthe plunger is supported independent of the beam to have movementintoand out of the liquid in the receptacle. y

21. Weighing mechanism as claimed in claim 19, wherein the receptaclehas connection with the beam to participate in the movement thereof andthe plunger is carried by an adjustable support independent of the beamto have movement into and out of the liquid in the receptacle,comprising racks, a shaft-having pinions thereon meshing with the racks,power means, and a driving connection between said power means andpinion carrying shaft torotate the latter in opposite directions.

22. Weighing mechanism as claimed in claim 19, wherein the receptaclehas connection with the bea-m to participate in the movement thereof andthe plunger is carried by an adjustable support independent of the beamto have movement into and out of the 1i uid in the receptacle,comprising racks, a s aft having pinions thereon meshing with the racks,power means, a driving connection between said power means an pinioncarrying shaft to rotate the latter in opposite directions, and meansoperative from the movement of the beam to control the connection of thepinion carrying shaft with the power means.

23. Weighing mechanism as claimed in claim 19, wherein the receptaclehas connection 'with the beam to participate -in vthemovement thereofand the plunger is carried by an adjustable support independent of thebeam to have movement into and out of the liquid in the receptacle,comprising racks, a shaft having pinions thereon meshing with Atheracks, power means, a driving connection between said power means andpinion carrying shaft to rotate the latter in opposite directionsandmeans to .control the connection of the pinion carrying shaft with thepower means including a traveling friction Surface and a friction diskto contact with said surface, and the direct-ion of travel of said diskadapted to be changed in angular relation to the direction of travel ofthe fric-` tion surface effected by deflection of the beam.

24. In Weighing mechanism, adjustable counterpoise to bring and maintainthe Weighing mechanism in equilibrium, means to adjust said counteroise, power means, and means to ap ly sai power means to thecounter-poise a justing means when the weighing mechanism is moved outof equilibrium including a travelling friction surface, a disk to havefrictional contact with said surface and travel in the same plane assaid surface with the weighing mechanism in equilibrium, and thedirection of travel ot' said disk adapted to be changed in angularrelation to the direction of travel of the fricis moved out ofequilibrium, and a connection between said disk and the counterpoiseAadjusting means operative from the disk when the direction of travelthereof is changed to apply the power means to the counterpoiseadjusting means.

25. In weighing mechanism, as claimed in claim 24, means to make ayrecord of successive weighings operativeA from the counterpoiseadjusting means to advance said recording means proportional with theadjustment of the counterpoise. A

26. In weighing mechanism, as claimed in claim 24, means to make arecord of successive weighings operative from the counterpoise adjustingmeans, and means to make an impression from said recording meansrendered inactive by the weighing mechanism when moved out ofequilibrium and rendered active when the weighing mechanism is balance.

brought into'perfect FRANK HEBBEN'.

